Textile hemstitching machine



June 4, 1935.

EB. ROBY TEXTILE HEMSTITCHING MACHINE Filed June 20, 1932 3 Sheets-Sheetl INVENTOR ATTORNEY June 4, 1935. E. B. ROBY TEXTILE HEMSTITCHINGMACHINE Filed June 20, 1932 S-Sheets-Sheet 2 men-TORNEY June 4, 1935,

www MMNN *ATTORNEY Patented June 4, 1935 Texter, @estuviera Edward B.Roby, New York, N. y., essigner'te 'rhe S and R Folding Machine 00;,In`cL,'=New York; N. Yi; a 'corporation of NewYork f i Applicaties June20, 1932, sierieine. 618,292, 7 Claims. `(o1. nz-zy Among the principal.objects which the present inv Utifoifi lias'in vievvV are "Ilo avoidimposing strain 'onlthetextile during the'operation of the machine;tdaeiiitat-ehlthe operation'of feeding 5 the'iate'rial to'thefr'n'achine; to'insure guidance of the inateryialin being stitched;to 'synchroni'zethe feeding vof "tylieniaterial vvtl the operation Iofthe stitching mechanisnifan'd' to'provide nieans for st'ofpping'tlieStitching thread iS blOkilll.

Eigure l is a side elevation ofa machine Vconstructed' and arrange'djinaccordance' lwithl the present inventionQi a portioi'of the lieadfof. aI

o, mac 'ne' used-'inconjunotion with said machine being shown. l

Figure 2 isa top plan view of the same, the bed4 of the sewingVmeehanisrn being shown, the

sewing mechanism however being' retrieved.`

Figure '3` isan end elevationY on enlarged scale oi'ftlie machineshowing, in broken lines, stitching' mechanism employed' conjunetiontherewith.

ligur'eli is a detailed View on enlarged scale showing the head Voff thestitchingmchanismf Egure 5`is 'a detailed viefw on enIarg'edscaleshovvinga portionof the tension andg'uiding dei Vices` employed in saidmachine.

Figure 6 is a front elevation 'o'f the same. Y Figure? is'a detailedviwin cross section show-` ing"I theA said tension devices inoperativeposition and a piece machine. A'

Figure 8 is a perspeetive v ievvv in detail of a fragment of the andguiding deviees.

35 igure'llfis adetailed- View on enlarged scale ShOWii-Stlie releasingmechanisme* stopping the stitching mechanism in the event oi breakage ofthe stitchingk thread.

Figure 10 is e perspective View of, theplateand 0 other parts shown forproducing the hem to the article;

Eigures il, 12, 13 and le vare sectional4 views and lli-fillrespectivelyof Figure 10;

Figure' l5is a plan of a portion ofthe plate and showing a nieansforsteadying the material while i1@ @heee felling meeheie'rgifana when themeans er the tapes@ with fet-speed reducing @feesie ses@ meer we"principally designed for ibeiedees'or l which are to be hernmed 4andVmore particularly forlfiandling'suhlarticles as liandlerchiefs.Wlin'handling ha kereliieis, "thesef'are disposed, on the elongatedtalolefshown inthe draw? ings asheving"elong'atedside bers 2o; The side5 bars ZDforrn a portion of the table having the' bdj Zion which isfsecured a` thin'metalfplate 22. The rnetal plate 22 throughout theinajo'r portion of .its lengtl serves to" 'support the battery'oftap'es23 v vvliieh constitute the carriers" for" the inat'eril' 10 enti'electric' "motory 28 'which' conne 'The transmission devices from 20`to 3l are so arra-Iigedtliat a'slippage isv 'usually "elle tedi'ntheevent" of 'any' uncalul'ated' strains being 'iinpos'd uponthfedrumQrshaft 3|, 'the purpose' di," the 30 whole meenemen; thus" ferdeseribeu'ibeing to camine* mreriereeing' treated mand un yerthe footIorfY the sewingV machine' Without "infi'po ing' any;pullingfstraifupenlthe material; The v of thematerial" willtherebylbeiniluencedor d'0" 35 trolled by ltheopeiation offthe feedingmechanism or foiotof the sewingmachinefr" The plateV 2? has anedge'extensionvwhich is rolledupon itself; as seen best 'Figure 10 ofthe drav/ ingsl'toffoim a sinuous guiding passage` be* 40 ginningwiththe "Uf-shaped' entrance 33^aid`efnd` ing with the triple eonvoluti'ns'.'Thedelivery @nu f the'ferminus'eftheedge thus remedie" dr-` rectlyadjacent thefeeding foot 35 and 355er the sewingmachine. 'e 1 9* ff 45The'lmaterial as delivered from the rolled edge is folded' asshownsubstantially in Figure 162` e that is, the edge 'of thematerial-'is folded' upon itself to form a three ply edge section.'Tliefoldrl ed portion is stitched `luy the sewing mechanism 50'` as.ndieel in Seid Figure 16, the stitches' renter# ing thematerial adjacentthe extreme edge of the flled'peltl Qi the body Qi the materiel ashemmig such materiels. Y

Ybest in Figures 5 to 8 inclusive.

members are grouped as shown in Figures 5 andY posed upon the foldededge, I provide a special tape, 3l. The tape 3l' is passed through thespiral passage in the edge of the plate 22 together with and insupporting lrelation to the fabric.

It will be noted by reference to Figures 10, 1l and l2, that the extremeedge A of the material B, is first guided by the upstanding edge 33which serves as a guide forV the said material. From this position, theclot-h enters the end 33 of the rolled edge of the plate 22. t thisstage it will be noted that the tape 3l' is held between guide rails 39and that the edge A of the material B overhangs or extends beyondthetape 3l'. As explained later, however, the tape 31 is moving with.land supporting the material B in' conjunction Y with the tapes 23 abovereferred to.

As the edge A and the tape 3? arenow advanced, the edge A isoverturned'as seen best in Figure 13 ofthe drawings, the tape 3l beingnow extended partly under the folded edge A. As the material B andtape3i' further progress they are folded into the position shown in Figure14 of the drawings where it will be observed that the tape 31 now liesabove the material B and the edge A thereof.

When and as the folded material and the tape 3l' are delivered from theconvolutions Sil, they will be found to be disposed as shown inexaggerated scale in Figure 17. It is in this condition that thematerial is delivered tothe sewing mechanism where the stitches aredriven through the folded edge C of the material B back of the edges ofthe tape 3l.

As can be seen in Figure l0 of the drawings, the

- material is delivered from the feed dog 35 and the To guide thematerial B, and more particular-v ly the'portion thereof in which thehem is to be formed, I provide a series of weight members lili. Thesemembers are arranged in groups as shown When these 6, they usually restupon the tape 3l", or the material resting thereupon.

The grouped members form a smooth surface under which the material isdrawn by the various tapes 23 and 3l.

The members dit overlap each upon its neighbor and each is mounted uponan extension rod 4l.

The rods (Si are each provided with a Ypivot bearing 122, an extensiondit, thereon extends over and underlaps a similar extension of the pivotbearings of the adjacent members.

The pivot a carrying bar Ml, and the various members are thereonarranged so that whenever one of the arrangement for the operation ofthe *machine 'drawings when the power end of the arm i5 is elevated,`

bearings l2 are suitably mounted on The purpose of this actionis'to VInthe present instance, provision is made for stopping the sewing machineand the feed of the `material whenever the sewing thread breaks.

To this end a brake arm i5 is pivot-ed at 56 on a bracket el, as shownbest in Figure 3 of the A brake shoe i8 is so disposed that the shoeVengagesV the surface of a clutch head 49. The clutch head Si isarranged to engage clutchwise the gear 3B which in turn has a. drivingengagement through the tape 5o with the head of the sewing machine. inga part of the arm'd is arranged to retract the clutch head 59 from thecone or other memlt is obvious that Vthe switch member 51 is i groundedor connected to one side of the source of electricpow-er While theswinging switch E5 is connected by means of a wire with the Vother sideof said source of electric power. The switch 55 is normally heid out ofengagement with the switch member 5? by means of the thread with whichthe stitching is being accomplished. Whenever this thread breaks, theswitch member 5t is allowed to swing over against the member 5l with theresult that the circuit energizing the magnets de is completed to permitthe same to rock the lever on its pivot bearing to retract the plate 53from engagement with the lug extension 54 thus releasing'the lever 52 topermit the spring 59 to elevate the outer end of the arm t5, resultingVin retracting the clutchV i9 while applying the brake thereto.

To steady the material as and while being sewed, provide a weighted ballte. This is held loosely in the bridle 6i. The ball Si? is so mounted inthe bridle @i as to roll freely therein, thus avoiding any stoppage ofthe operation of the ball which Vmight operate as a drag on thematerial.

From the foregoing it will be seen that a machine constructed andequipped as herein disclosed can be handled'by an operative, who at thebeginning of the days work, will lift the weight members 'i153preferably throughout they entire line and up to the right of the end 33of the rolled` ycarrying the material into and through the rolled edgeof the plate 22 which might be called the hemmer.

After the material passes the headV of the sew 2,004,080. e ingmechanism, the tape 31 is spread to avoid.

Y Wise, the machineis not sufficiently loaded or supplied with 'the'articles to be hemrned, the operator can lift the weight members 4Q atany point, thereby also lifting all of the weight members 40 at theright ofthe oneV directly engaged so that the material can be placed inposition as desired.

It will also be noted that the tape 31 being constructed of relativelyfirm and strong `material, serves to hold the material in desiredposition during the hemming thereof.

It will also be noted that by reason of the employment of the tapes 23and 31, the material is at all times fed to the sewing mechanism withoutstrain or distortion of any kind.

I claim:

1. A machine as characterized embodying a stitching mechanism, elongatedguiding means for delivery of fabric to said stitching mechanism whichwill triple fold said fabric upon itself adjacent the edge thereof, andconveying means for supporting said fabric through said guiding means torelieve saidfabric from any pulling strains, said means embodying arelatively narrow tape turned upon itself to'enfold the fabric withinand during the passage through said guiding means to relieve saidfabric` of any pulling strains.

2. A machine as characterized embodying a stitching mechanism, elongatedguiding means for delivery of Vfabric to said stitching mechanism whichwill triple fold said fabric upon itself adjacent the edge thereof,conveying means forY supporting said fabric through said guiding meansto relieve said fabric from any pulling strains, said means embodying acarrying tape passing through said guiding means in close contact withthe folded edge of said fabric, and means for feeding said tape andfabric to said stitching mechanism in harmony with the operationthereof, said means embodying the feeding mechanism of said stitchingmechanism, said feeding mechanism being operated directly upon saidtape.

3. A machine as characterized embodying a stitching mechanism, elongatedguiding means for delivery of fabric to said stitching mechanism,adapted to triple fold said fabric upon itself adjacent the edgethereof, conveying means for supporting said fabric through said guidingmeans to relieve said fabric from any pulling strains, said meansembodying a carrying tape passing through said guiding means in closecontact with the folded edge of said fabric, and means for feeding saidtape and fabric to said stitching mechanism in harmony with theoperation thereof, said means embodying the feeding mechanism of saidstitching mechanism, said feeding mechanism being adapted to operatedirectly upon said tape, and a driving mechanism for said tape embodyinga prime mover and supporting rollers operatively connected therewith bymeans adapted for adjustment to yield to strains thereon notpredetermined.

4. A machine as characterized embodying a stitching mechanism, elongatedguiding means for delivery of fabric to said stitching mechanism adaptedto triple fold said fabric upon itself adjacent the edge thereof,conveying means for supporting said fabric through said guiding means torelieve said Vfabric from any pulling strains, said means embodyingafcarryingtape passingl through said 'guiding means in closecontact'with the foldededge of saidfabric, and Ineans'- forjfe/eding`said tape and'fabric toI said.` stitching mechz'inisin` in 'harmony withthe opera-I tion thereof, said "means embodying thefeeding mechanism ofsaid stitching mechanism, Vsaid feeding mechanism being adapted tooperate directly upon said tape, a driving mechanism for said tapeembodying a prime mover and supporting rollers operatively connectedtherewith by `means adapted for adjustment to yield to strains thereonnot predetermined, and a conveying apron disposed in parallel relationto said tape and mounted on said rollers for conveying the material pastsaid i stitching mechanism synchronously with the movement of said tape.

5. A machine as characterized embodying a stitching mechanism,elongatedguiding means for delivery of fabric to said stitchingmechanism adapted to triple fold said fabric upon itself adjacent theedge thereof, conveying means for supporting said fabric through saidguiding means to relieve said fabric from any pulling strains, `saidVmeans embodying a carrying tape passing through said guiding means inclose contact with the folded edge of said fabric, means for feedingsaid tape and fabric to said stitching mechanism in harmony with theoperation thereof, said means embodying the feeding mechanism of saidstitching mechanism, said feeding mechanism being adapted to operatedirectly upon said tape, and a driving mechanism for said tape embodyinga prime mover and supporting rollers operatively connected therewith bymeans adapted foradjustment to yield to strains thereon notpredetermined, and a conveying apron disposed in parallel relation tosaid tape and mounted on said rollers for conveying the material pastsaid stitching mechanism synchronously with the f movement of said tape,said apron embodying a plurality of endless belt tapes disposed inparallel relation to the first mentioned tape and mounted upon to becontrolled by said rollers.

6. A machine as characterized embodying a stitching mechanism, elongatedguiding means for delivery of fabric to said stitching mechanism adaptedto triple fold said fabric upon itself adjacent the edge thereof,conveying means for supporting said fabric through said guiding means torelieve said fabric from any pulling strains, said means embodying Varelatively narrow tape within and during the passage through saidelongated guiding means to relieve said fabric of any pulling strains,and tension means slidably mounted adjacent and parallel with saidguiding means, said tension means comprising a plurality of weightedmembers adapted to be in engagement with said fabric whereby the fabricwill be in constant contact with said tape.

7. Amachineas characterized in combination with a stitching mechanismcomprising `an elongated table having a` bed and side arms, a metalplate supported by said bars and extending substantially the entirelength of the table, brackets l projecting from the ends of the saidtable and.

en said plate shaped to permit entry' f one tape and an edge of thefabric the entry point of said,

Y extension being U-shaped and terminating at its other end with tripleconvolutions whereby said 5 fabricis fed to the stitching mechanism witha three ply edge, and a plurality of Weighted mem'-

